|
|
| brand | CPU name- rated speed |
internal speed [Mhz] | multiplier | clock (mem
bus) [Mhz] | PCI bus [Mhz] | Notes/P-rating | |
|---|---|---|---|---|---|---|---|
| Intel/AMD/Cyrix 486 Class | 486DX2-66 | 66 | 2x | 33 | 33 | ||
| 486DX2-80 | 80 | 2x | 40 | 40? | ? | ||
| Cx486DX4-75 | 75 | 3x | 25 | ? | |||
| 486DX4-100 | 100 | 3x | 33 | 33 | |||
| AMD Enhanced 486 Class | 486DX4-120 | 120 | 3x | 40 | 40? | ? | |
| 486DX4-120 | 100 | 2x | 50 | ? | 2x mode (non-standard) | ||
| Intel Pentium® | Pentium®-75 | 75 | 1.5x | 50 | 25 | ||
| Pentium®-90 | 90 | 1.5x | 60 | 30 | |||
| Pentium®-100 | 100 | 1.5x | 66 | 33 | |||
| Pentium®-120 | 120 | 2x | 60 | 30 | |||
| Pentium®-133 | 133 | 2x | 66 | 33 | |||
| Pentium®-150 | 150 | 2.5x | 60 | 30 | |||
| Pentium®-166 | 166 | 2.5x | 66 | 33 | |||
| Pentium®-200 | 200 | 3x | 66 | 33 | |||
| AMD 5x86 | Amd5x86-133 | 133 | 4x | 33 | 33 | P75+ | |
| Amd5x86-133 | 160** | 4x | 40 | 40*? | P100+(non-standard) | ||
| Amd5x86-133 | 150** | 3x | 50 | 50*? | n/a (non-standard) | ||
| Cyrix 5x86 | Cx5x86-100 | 100 | 2x/3x | 50/33 | P75+ | ||
| Cx5x86-120 | 120 | 3x | 40 | P90+ | |||
| Cyrix 6x86 | Cx6x86-100 | 100 | 2x | 50 | 25* | P120+ | |
| Cx6x86-110 | 110 | 2x | 55 | ? | P133+ | ||
| Cx6x86-120 | 120 | 2x | 60 | 30* | P150+ | ||
| Cx6x86-133 | 133 | 2x | 66 | 33* | P166+ | ||
| Cx6x86-150 | 150 | 2x | 75 | 40* | P200+ | ||
| NexGen | Nx586-80? | I couldn't find any info on this processor | |||||
| Notes |
* are my speculations. ** are overclocked modes. (may damage the CPU, see Overclocking FAQ). Cyrix 486DX4, 5x86 and 6x86 have 2x/3x clock multiplier. Amd 5x86 has 3x/4x clock multiplier. PCI specs are for 33Mhz; dunno if or how PCI stands overclocking to 40 or 50 Mhz. Only Intel Pentium®s and Cyrix 6x86 have triple clocks (internal/memory/PCI bus). For the others the PCI clock is the same as the memory clock, if not forced to 33 Mhz. | ||||||